java file int array read -

i want array of integers file .but when array unwanted zeros in array size 10 , there 5 integers in file(18,12,14,15,16). how remove zeros. code is:

import java.io.file; import java.io.ioexception; import java.util.arrays; import java.util.scanner;    public class txtfile {  public static void main(string[] args) {     // todo auto-generated method stub     file infile=new file("h:\\documents\\javaeclipseworkplace\\readtextfile\\src\\txt.txt");     scanner in=null;     int []contents = new int[10];     int i=0;     try {         in=new scanner(infile);          while(in.hasnextint()){              contents[i++]=in.nextint();         }         system.out.println(arrays.tostring(contents));     }     catch(ioexception e){         e.printstacktrace();     }     finally{         in.close();     }  } 

}

output is: [18, 12, 14, 15, 16, 0, 0, 0, 0, 0].

this because allocate array of size 10, , values initialized 0 default. read 5 values file, , overwrites first 5 values in array, untouched 0's still there.

you have few options:

you count number of values read file, resize array match, e.g.:

while(in.hasnextint()){     contents[i++]=in.nextint(); }  // 'i' contains number read file: contents = arrays.copyof(contents, i); // contents contains 'i' items. system.out.println(arrays.tostring(contents)); 

you count number of values read file, explicitly print many values, e.g.:

while(in.hasnextint()){     contents[i++]=in.nextint(); }  // 'i' contains number read file: (int n = 0; n < i; ++ n)     system.out.println(contents[n]); 

you use dynamic container arraylist<integer>, , add values read them. can support number file automagically, e.g.:

arraylist<integer> contents = new arraylist<integer>();  ... while(in.hasnextint()){     contents.add(in.nextint()); }  system.out.println(contents); 

i recommend third option. flexible , easiest deal with.